"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : reindex
Case Name   : 事务中reindex concurrently并发报错
Create At   : 2022/08/30
Owner       : @zou_jialiang050
Description :
    1.建表
    2.向表中插入数据
    3.创建索引
    4.开启2个事务,同时执行reindex concurrently
    5.清理环境
Expect      :
    1.成功
    2.成功
    3.成功
    4.合理报错
    5.成功
History     :
"""

import time
import os
import unittest
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.ComThread import ComThread
from testcase.utils.Logger import Logger


class SQL(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.table = 't_reindex_concurrently_0063'
        self.index = 'i_reindex_concurrently_0063'
        self.Constant = Constant()

    def test_reindex(self):
        step1 = 'step1:建表 expect:建表成功'
        self.logger.info(step1)
        create_table = self.primary_sh.execut_db_sql(f'''
            drop table if exists {self.table};
            create table {self.table}(c_int int)''')
        self.logger.info(create_table)
        self.assertIn(self.Constant.TABLE_DROP_SUCCESS, create_table,
                      "执行失败" + step1)
        self.assertIn(self.Constant.CREATE_TABLE_SUCCESS, create_table,
                      "建表失败" + step1)

        step2 = 'step2:向表中插入数据 expect:向表中插入数据成功'
        self.logger.info(step2)
        insert_data = self.primary_sh.execut_db_sql(
            f'''insert into {self.table} values(generate_series(1,500000));''')
        self.logger.info(insert_data)
        self.assertIn(self.Constant.INSERT_SUCCESS_MSG, insert_data,
                      "执行失败" + step2)

        step3 = 'step3:创建索引 expect:创建索引成功'
        self.logger.info(step3)
        create_index = self.primary_sh.execut_db_sql(
            f'''drop index if exists {self.index};
            create index {self.index} on {self.table}(c_int);''')
        self.logger.info(create_index)
        self.assertIn(self.Constant.DROP_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step3)
        self.assertIn(self.Constant.CREATE_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step3)

        step4 = 'step4:开启2个事务,同时执行reindex concurrently ' \
                'expect:合理报错'
        self.logger.info(step4)
        strat_transaction1 = f'''start transaction;
            reindex table concurrently {self.table};
            select pg_sleep(50);
            rollback'''
        session1 = ComThread(self.primary_sh.execut_db_sql,
                             args=(strat_transaction1,))
        session1.setDaemon(True)

        strat_transaction2 = f'''start transaction;
            reindex table concurrently {self.table};
            rollback;'''
        session2 = ComThread(self.primary_sh.execut_db_sql,
                             args=(strat_transaction2,))
        session2.setDaemon(True)
        session1.start()
        time.sleep(2)
        session2.start()
        session1.join(40)
        session2.join(20)
        result1 = session1.get_result()
        self.logger.info(result1)
        result2 = session2.get_result()
        self.logger.info(result2)
        self.assertIn('ERROR:  REINDEX CONCURRENTLY cannot run inside a '
                      'transaction block', result1, "执行失败" + step4)
        self.assertIn('ERROR:  REINDEX CONCURRENTLY cannot run inside a '
                      'transaction block', result2, "执行失败" + step4)

    def tearDown(self):
        step5 = 'step5:清理环境 expect:成功'
        self.logger.info(step5)
        clean_environment = self.primary_sh.execut_db_sql(
            f'''drop table {self.table} cascade;''')
        self.logger.info(clean_environment)
        self.assertIn(self.Constant.TABLE_DROP_SUCCESS, clean_environment,
                      '执行失败' + step5)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
